Brake for railway-cars



2 Sheets -Sheet 1.

(No Model.)

I. M. SKILLMAN. BRAKE FOR RAILWAY CARS.

Patented Mar. 19, 1895.

V I I fi Wm M TNE NORRS PETERS CO. PHOYOLITHO WASNYNUTON. D. C.

2 Sheets-Sheet 2.

(No Model.) A I I. M. SKILLMAN.

A BRAKE FOB RAILWAY CARS. V No. 535,867. Patented Mar. 19, 1895.

NITED STATES PATENT OFFI E.

IVAN M. ,SKILLMAN, OF CHICAGO, ILLINOIS.

BRAKE FOR RAILWAY-CARS.

SPECIFICATION forming part of Letters Patent No. 535,867, dated March19, 1895,

Application filed April 30, 1894- .To all whom it may concern.-

Be it known that I, IVAN M. SKILLMAN, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Motor-Brakes, of whichthe following is a specification.

This invention relates to improvements in brakes, and while it is moreespecially adapted for electric-motors, yet it may be employed inconnection with various kinds of motors, and it consists in certainpeculiarities of the construction, novel arrangement, and operation ofthe various parts thereof, aswill be hereinafter more fully set forthand specifically claimed.

The object of my invention is to provide a brake, which shall be simpleand inexpensive in construction, strong and durable, and more effectivein operation than the brakes of the ordinary construction, and now ingeneral use.

In order to enable others skilled in the art to which my inventionpertains to make and use the same, I will now proceed to describe it,referring to the accompanying drawings, in which-.

Figure 1, is a plan view, partly in section, of a portion of one of thetrucks, and a part of the motor-frame, showing the journal-boxes andcar-wheels connected with the axle in the ordinary manner, and my brakein position. Fig. 2, is a vertical sectional View of the brake and oneof the wheels, showing them in position on a portion of the axle, anddisengaged. Fig. 3, is a face view of the brake, and one of thecar-wheels and a portion of the operating. lever. Fig. 4, is a faceorinner view of one of the clutching-disks. Fig. 5, is a rear viewthereof. Fig. 6, is a vertical sectional view of the same, taken on line6, 6, of Fig. 4.. Fig. 7, is an end view of a sleeve to engage theclutch-disk. Fig. 8, is an enlarged detail view of one of thecar-wheels, a portion of the axle and the brake in position thereon,showing it set. Fig. 9, is a rear view of the clutch-collar. Fig. 10, isa face view of the same. Fig. 11, is a vertical sectional view thereof.Fig. 12,

is a detail plan View partly in section of a part of the axle, a portionof the adj ustingsleeve and clutch-collar, illustrating their manner ofengagement and operation. Fig. 13, is a face view of the adjustingcollar. Fig.

Serial No. 509,473. (No model.)

14., is a plan view thereof, and Fig. 15, is an enlarged detail view inelevation of the same.

Similar letters refer to like parts through Wheel, or otherwise rigidlysecured thereto, as.

desired. This disk is provided at its center, with an opening, throughwhich is passed the axle A, and around said opening is formed aperipheral recess 1), for the reception of the sleeve 6', which extendslongitudinally on the axle, as is clearly shown in Fig. 2. On thissleeve is fitted a friction or clutch disk 0, which has its faceprovided with a covering of leather, or other suitable friction creatingsubstance.

Thedisk C, is formed with a movable sec tion 0, which is held in placeby means of suitable nuts and bolts 0, and which section may be takenontwhen it is desired to remove the disk from the axle, or to place itthereon. The rear surfaceof the disk 0, is provided with a hook 0 towhich is secured a chain 0 which is adapted to be wound around the hub 0in the operation of breaking or stopping the car. On that portion of thehub c of the disk 0, farthest from the disk B, is secured a clutch orcontrolling collarD, which has pivotally connected thereto the operatinglever D, which lever may have any suitable connections for the operationthereof. The face of the clutch or controlling collar D, is provided inits hub with a series of beveled or ratchet-teeth d, which are adaptedto engage similar teeth d, on one end of the sleeve D which sleeve, asis clearly shown in Figs. 1, 2, 8, and 12, is provided at each of itsends with aperipheral collar (1 and 03 between which collars rests andmay be secured a portion A, of the motor-frame, which frame extendslongitudinally with the axle to near the other car-wheel, and rests on asleeve E, which is also provided with collars or flanges e, and

e, the flange or collar thereof, being provided on its outer surface orthe surface adjacent to the car wheel, with beveled or ratchetteethsimilar to the teeth 01', on the sleeve D Between the sleeve E, and thegear a and on the axle is placed another sleeve E, which is providedwith a collar 6 having on its surface adjacent to the collar e beveledor ratchetteeth a", to engage similar formed teeth on the last namedcollar. The upper portion of the collar e is cutaway as at e and isprovided on each side of said cut-away portion or recess with lugs orprojections a within which a screw-threaded rod E has its bearings. Thisthreaded rodis adapted to engage one of the teeth a on the collar 6, andthereby afford adjustment of the brake.

From the foregoing and by reference to the drawings, it will be seen andreadily understood that by moving the operating lever D, the controllingor clutch-disk D, will be turned, and as the ratchet or beveled-teeth d,thereof engage like teeth d, on the collar d of the sleeve D the saiddisk and collar will by reason of the inclination of the teeth beseparated, which operation will force the disk 0, against the disk B,with such a degree of force or friction that as the wheels revolve, thedisk 0, will turn therewith, thus causing the chain 0 which is securedat one end to said disk or the hub 0 thereof, and at the other end tothe brake-bar to be made taut, thus pressing the brake-shoes against theperipheries of the car-wheels. As soon as it is desired to let the brakeoff,or free the wheels, the operating lever may be moved in the oppositedirection, which operation will cause the disk G, to be withdrawn fromcontact with the disk B, and allow of its unimpeded movement. When it isdesired to adjust the tension or to increase or lessen the friction ofthe brake, all that is necessary is to turn the screw-threaded rod E bymeans of a wrench applied to one end thereof, or otherwise, when thethreads will engage one of the teeth on the collar 6', and force thesleeves E, and D nearer to the wheel carrying the disk B, or they may bewithdrawn therefrom by the reverse movement of the screw-threaded rod,as isobvious.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

1. The combination of the axle A, with the wheels a, and a mountedthereon, the wheel at, having the disk B, on its inner surface, the disk0, having the hub 0 and frictional face, mounted on the axle and adaptedto impinge against the disk B, the clutch-collar D, provided with alever to operate the same and having in its face a series of beveled orratchet-teeth, the sleeve D mounted on the axle and having the beveledteeth (1, to engage the teeth on the clutch-collar, the sleeve E, havinga collar 6', provided with beveled or ratchet --teeth, the collar 6having the screw-threaded rod E ,to engage the teeth on the collar 6',and the piece A, uniting the sleeves E, and D and supported thereby, allconstructed, arranged and operating substantially as shown and describedand for the purpose set forth.

2. The combination with an axle of the sleeve E, having the collar eprovided with beveled or ratchet teeth a to engage similarly formedteeth on an adjacent collar, the collar e having the cut-away part a,provided on each side thereof with projections 6 a screW-throaded'rod ehaving its bearings in said projections and adapted to engage one of theteeth on the collar adjacent to the collar 6 substantially as described.

IVAN M. SKILLMAN.

Witnesses:

Grants. (3. TILLMAN, E. A. DUGGAN.

